Find an office PC under 200 euro - so no gaming pc! Office programs, Netflix YouTube Dazn and co. Should run without jerking.
Please just send in the link from the PC if you know a good one. So don't name any websites where you could look, just add a link.
Not quite 200, but you won't find anything good for the price (brought in at most).
https://www.agando-shop.de/product_info.php/info/p585
Is also very modern, but should be enough for your needs
If then wait until January (DE: January) 2021. Shortly after Christmas, electronic goods are thrown out by retailers at lower prices.
Maybe you can get some money together from parents, relatives and other acquaintances / friends for Christmas. Then a better device goes out. It would be even better if the device is only for work and not for gaming and such, then take a small laptop. You can take it with you everywhere and all that.